@media (max-width: 1199px) {
  .plans-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 991px) {
  .hero-title { font-size: clamp(2rem, 5vw, 3rem); }
  .hero-subtitle { font-size: clamp(0.95rem, 2vw, 1.3rem); }
  #crypto-ticker { flex-wrap: wrap; gap: 10px; font-size: 0.8rem; }
  .steps-grid { gap: 24px; }
  .testimonial-card { padding: 24px; }
}

@media (max-width: 767px) {
  body { font-size: 14px; }

  nav { padding: 12px 0; }
  nav.nav-scrolled { padding: 8px 0; }
  .nav-auth-btn { padding: 8px 16px; font-size: 0.8rem; }

  .hero-section { min-height: 90vh; }
  .hero-title { font-size: clamp(1.8rem, 7vw, 2.5rem); }
  .hero-subtitle { font-size: clamp(0.9rem, 3vw, 1.1rem); }
  .hero-text { font-size: 0.95rem; }
  #crypto-ticker { padding: 8px 16px; gap: 8px; font-size: 0.75rem; }

  .stat-card { padding: 24px 16px; }
  .stat-number { font-size: clamp(1.6rem, 5vw, 2.2rem); }

  .plans-grid { grid-template-columns: 1fr; gap: 16px; }

  .section-heading { font-size: clamp(1.5rem, 5vw, 2rem); }
  .section-desc { font-size: 0.95rem; }

  .steps-grid { grid-template-columns: 1fr; }
  .steps-grid::before { display: none; }
  .step-card { padding: 28px 20px; }

  .activity-panel { max-height: 320px; }

  .testimonial-card { padding: 20px; }
  .testimonial-card::before { font-size: 3rem; top: 12px; left: 16px; }
  .testimonial-text { font-size: 0.9rem; }

  .marquee-chip { width: 56px; height: 56px; }
  .marquee-chip img { width: 28px; height: 28px; }
}

@media (max-width: 575px) {
  .hero-section { min-height: 85vh; }
  .hero-title { font-size: clamp(1.5rem, 8vw, 2rem); }
  .hero-subtitle { font-size: 0.9rem; }
  .hero-text { font-size: 0.88rem; margin-bottom: 24px; }

  .btn-shimmer, .btn-outline { padding: 12px 24px; font-size: 0.85rem; }

  #back-to-top { bottom: 20px; right: 20px; width: 40px; height: 40px; font-size: 1rem; }

  .footer-heading { margin-bottom: 16px; }
}

@media (max-width: 374px) {
  .hero-title { font-size: 1.3rem; }
  #crypto-ticker { flex-direction: column; align-items: flex-start; border-radius: var(--radius-sm); }
  .ticker-sep { display: none; }
}

@media (min-width: 1200px) {
  .container { max-width: 1140px; }
}